These chartreuse yellow opaque plastic stack or tapered beads are ideal for great for adding to lures faster than individual beads. They measure 18mm long (approx. 3/4") and are sized at 6mm, 5mm, 4.5mm, 3.75mm and 3.25mm with a 1mm hole. Made in the USA with high quality polystyrene plastic and sold in packs of approx. 25 beads.